Pull in various gpu/command_buffer fixes from chromium

gpu/command_buffer/client/gles2_implementation_unittest.cc

Index: gpu/command_buffer/client/gles2_implementation_unittest.cc
diff --git a/gpu/command_buffer/client/gles2_implementation_unittest.cc b/gpu/command_buffer/client/gles2_implementation_unittest.cc
index 4fecbbc1781d3654b5a8951808558b8d884fc2f5..0b02f94897a5ed4bd92528bbfe12291bc924fb2e 100644
--- a/gpu/command_buffer/client/gles2_implementation_unittest.cc
+++ b/gpu/command_buffer/client/gles2_implementation_unittest.cc
@@ -51,13 +51,13 @@ template <typename T>
 class SizedResultHelper {
  public:
   explicit SizedResultHelper(T result)
-      : size_(sizeof(result)),
-        result_(result) {
+      : size_(sizeof(result)) {
+    memcpy(result_, &result, sizeof(T));
   }
 
  private:
   uint32 size_;
-  T result_;
+  char result_[sizeof(T)];
 };
 
 // Struct to make it easy to pass a vec4 worth of floats.