Added support for glGetString, glGetShaderSource,...

gpu/command_buffer/service/common_decoder.h

 // Copyright (c) 2009 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_COMMON_DECODER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_COMMON_DECODER_H_
 
 #include <map>
 #include <stack>
 #include <string>
@@ skipping 39 matching lines @@
    public:
     Bucket() : size_(0) {
     }
 
     size_t size() const {
       return size_;
     }
 
     // Gets a pointer to a section the bucket. Returns NULL if offset or size is
     // out of range.
-    const void* GetData(size_t offset, size_t size) const;
+    void* GetData(size_t offset, size_t size) const;
 
     template <typename T>
     T GetDataAs(size_t offset, size_t size) const {
       return reinterpret_cast<T>(GetData(offset, size));
     }
 
     // Sets the size of the bucket.
     void SetSize(size_t size);
 
     // Sets a part of the bucket.
     // Returns false if offset or size is out of range.
     bool SetData(const void* src, size_t offset, size_t size);
 
-    // Sets the bucket data from a string.
+    // Sets the bucket data from a string. Strings are passed NULL terminated to
+    // distinguish between empty string and no string.
     void SetFromString(const std::string& str);
 
    private:
     bool OffsetSizeValid(size_t offset, size_t size) const {
       size_t temp = offset + size;
       return temp <= size_ && temp >= offset;
     }
 
     size_t size_;
     scoped_array<int8> data_;
@@ skipping 84 matching lines @@
 
     uint32 offset;
   };
   std::stack<CommandAddress> call_stack_;
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_COMMON_DECODER_H_