[Cleanup] Remove using namespace tvm::runtime from headers (#17246)

Prior to this commit, various header files had `using namespace
tvm::runtime`, which imports all names from `tvm::runtime` into the
current namespace.

These imports can cause compilation errors depending on the order of
`#include` statements.  For example, the `#include
<tvm/relay/attrs/transform.h>` file uses the unqualified name `Bool`
to refer to `::tvm::Bool`, a subclass of `PrimExpr`.  If a different
header file specifies `using namespace tvm::runtime` within the
`tvm::relay` namespace, then the unqualified name `Bool` ambiguously
refers to either `::tvm::Bool` or `::tvm::runtime::Bool`.

In MSVC, this can cause even further compilation errors.  By default,
MSVC does not follow the C++ standard for name resolution in
templates.  The standard requires that any names in a template that do
not depend on template parameters be resolved when the template is
declared.  However, MSVC instead resolves these names when the
template is instantiated.  As a result, the same `using namespace
tvm::runtime` may cause a compilation error if it occurs after the
template's declaration, but before the template's usage.

(TVM provides the `/permissive-` flag to MSVC builds specifically to
disable MSVC's non-standard name resolution, so this only impacts
downstream forks that disable this flag.  See
#16343 for more details.)

This commit removes `using namespace tvm::runtime`, replacing them
with explicit `using tvm::runtime::SOME_SPECIFIC_SYMBOL` where
necessary.  This resolves both the include-order dependency for
standards-compliant compilers, and the compilation errors for MSVC's
default build.

src/contrib/msc/core/ir/graph_builder.h

@@ -51,7 +51,8 @@ namespace msc {
 using Expr = tvm::RelayExpr;
 using RelaxExprVisitor = tvm::relax::ExprVisitor;
 using RelayExprVisitor = tvm::relay::ExprVisitor;
-using namespace tvm::runtime;
+
+using tvm::runtime::NDArray;
 
 /*!
  * \brief Config for building MSCGraph.

src/relay/backend/vm/compiler.h

@@ -51,7 +51,8 @@ namespace tvm {
 namespace relay {
 namespace vm {
 
-using namespace tvm::runtime;
+using tvm::runtime::ModulePropertyMask;
+using tvm::runtime::NDArray;
 using namespace tvm::runtime::vm;
 using namespace relay::transform;
 

src/relay/parser/parser.cc

@@ -48,6 +48,8 @@ namespace relay {
 /*! \brief The meta table maps from type key to a sequence of objects. */
 using MetaTable = Map<String, Array<ObjectRef>>;
 
+using tvm::runtime::NDArray;
+using tvm::runtime::String2DLDataType;
 using tvm::transform::CreateModulePass;
 using tvm::transform::PassContext;
 

src/relay/parser/token.h

@@ -36,8 +36,6 @@
 namespace tvm {
 namespace relay {
 
-using namespace runtime;
-
 enum class TokenType {
   kCommentStart,
   kCommentEnd,

src/relay/parser/tokenizer.h

@@ -41,8 +41,6 @@
 namespace tvm {
 namespace relay {
 
-using namespace runtime;
-
 // trim from start (in place)
 static inline void ltrim(std::string& s) {  // NOLINT(*)
   s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](int ch) { return !std::isspace(ch); }));

src/runtime/contrib/cblas/gemm_common.h

@@ -34,7 +34,10 @@
 namespace tvm {
 namespace contrib {
 
-using namespace runtime;
+using runtime::TVMArgs;
+using runtime::TVMRetValue;
+using runtime::TypeMatch;
+
 inline int ColumnStride(const DLTensor* tensor) {
   // If the tensor itself is transposed then it will have strides
   // backward from what we expect.  Regardless, the max of the strides

src/runtime/contrib/json/json_node.h

@@ -42,7 +42,6 @@ namespace tvm {
 namespace runtime {
 namespace json {
 
-using namespace tvm::runtime;
 using JSONGraphAttrs = std::unordered_map<std::string, dmlc::any>;
 
 /*!

src/runtime/contrib/nnpack/nnpack_utils.h

@@ -30,7 +30,6 @@
 
 namespace tvm {
 namespace contrib {
-using namespace runtime;
 
 struct NNPackThreadLocalEntry {
   pthreadpool_t threadpool{nullptr};

src/runtime/contrib/verilator/verilator_runtime.h

@@ -43,7 +43,6 @@ namespace tvm {
 namespace runtime {
 namespace contrib {
 
-using namespace tvm::runtime;
 using namespace tvm::runtime::contrib;
 using namespace tvm::runtime::json;