translator: Scope all classes with "sh".

I was seeing an odd problem with our PoolAlloc conflicting with the
glslang/Vulkan TIntermNode, so the fix was to move everything to a
separate namespace.

The bison grammars are also regenerated. No functional changes.

BUG=angleproject:1576

Change-Id: I959c7afe4c092f0d458432c07b4dcee4d39513f3
Reviewed-on: https://chromium-review.googlesource.com/408267
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
diff --git a/src/compiler/translator/BreakVariableAliasingInInnerLoops.cpp b/src/compiler/translator/BreakVariableAliasingInInnerLoops.cpp
index aada0fa..018e72c 100644
--- a/src/compiler/translator/BreakVariableAliasingInInnerLoops.cpp
+++ b/src/compiler/translator/BreakVariableAliasingInInnerLoops.cpp
@@ -25,6 +25,9 @@
 // the bug only shows up with swizzles, and ternary assignment, whole array or whole structure
 // assignment don't need a workaround.
 
+namespace sh
+{
+
 namespace
 {
 
@@ -94,9 +97,6 @@
 
 }  // anonymous namespace
 
-namespace sh
-{
-
 void BreakVariableAliasingInInnerLoops(TIntermNode *root)
 {
     AliasingBreaker breaker;