Implement most of the remaining entry points in the passthrough cmd decoder.

gpu/command_buffer/service/gles2_cmd_decoder_passthrough_handlers.cc

 // Copyright (c) 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/gles2_cmd_decoder_passthrough.h"
 
 namespace gpu {
 namespace gles2 {
 
 // Custom Handlers
@@ skipping 285 matching lines @@
       c.params_shm_id, c.params_shm_offset, Result::ComputeSize(uniformCount));
   GLint* params = result ? result->GetData() : NULL;
   if (params == NULL) {
     return error::kOutOfBounds;
   }
   // Check that the client initialized the result.
   if (result->size != 0) {
     return error::kInvalidArguments;
   }
 
-  GLsizei bufsize = uniformCount;
-  GLsizei length = 0;
-  error::Error error = DoGetActiveUniformsiv(program, uniformCount, indices,
-                                             pname, bufsize, &length, params);
+  error::Error error =
+      DoGetActiveUniformsiv(program, uniformCount, indices, pname, params);
   if (error != error::kNoError) {
     return error;
   }
 
-  result->SetNumResults(length);
+  result->SetNumResults(uniformCount);
   return error::kNoError;
 }
 
 error::Error GLES2DecoderPassthroughImpl::HandleGetAttachedShaders(
     uint32_t immediate_data_size,
     const volatile void* cmd_data) {
   const volatile gles2::cmds::GetAttachedShaders& c =
       *static_cast<const volatile gles2::cmds::GetAttachedShaders*>(cmd_data);
   GLuint program = static_cast<GLuint>(c.program);
   typedef cmds::GetAttachedShaders::Result Result;
@@ skipping 422 matching lines @@
       c.indices_shm_id, c.indices_shm_offset,
       Result::ComputeSize(static_cast<size_t>(count)));
   GLuint* indices = result ? result->GetData() : NULL;
   if (indices == NULL) {
     return error::kOutOfBounds;
   }
   // Check that the client initialized the result.
   if (result->size != 0) {
     return error::kInvalidArguments;
   }
-  GLsizei length = 0;
   error::Error error =
-      DoGetUniformIndices(program, count, &names[0], count, &length, indices);
+      DoGetUniformIndices(program, count, &names[0], count, indices);
   if (error != error::kNoError) {
     return error;
   }
-  if (length != count) {
-    return error::kOutOfBounds;
-  }
-  result->SetNumResults(length);
+  result->SetNumResults(count);
   return error::kNoError;
 }
 
 error::Error GLES2DecoderPassthroughImpl::HandleGetUniformLocation(
     uint32_t immediate_data_size,
     const volatile void* cmd_data) {
   const volatile gles2::cmds::GetUniformLocation& c =
       *static_cast<const volatile gles2::cmds::GetUniformLocation*>(cmd_data);
   GLuint program = static_cast<GLuint>(c.program);
   Bucket* bucket = GetBucket(c.name_bucket_id);
@@ skipping 1896 matching lines @@
   // TODO(geofflang): Handle PIXEL_UNPACK_BUFFER case.
   const void* data = GetSharedMemoryAs<const void*>(
       c.data_shm_id, c.data_shm_offset, image_size);
   return DoCompressedTexSubImage3D(
       target, level, xoffset, yoffset, zoffset, width, height, depth,
       format, image_size, data);
 }
 
 }  // namespace gles2
 }  // namespace gpu