EDK: Remove MOJO_SYSTEM_IMPL_EXPORT, system_impl_export.h, etc.

mojo/edk/system/channel_endpoint_id.h

Index: mojo/edk/system/channel_endpoint_id.h
diff --git a/mojo/edk/system/channel_endpoint_id.h b/mojo/edk/system/channel_endpoint_id.h
index b00a225ac17d381e055d7a0b25ee5f2fe7d0af39..3a0ff7c4639753307d587f44de211735b998ff59 100644
--- a/mojo/edk/system/channel_endpoint_id.h
+++ b/mojo/edk/system/channel_endpoint_id.h
@@ -12,7 +12,6 @@
 #include <ostream>
 
 #include "base/gtest_prod_util.h"
-#include "mojo/edk/system/system_impl_export.h"
 #include "mojo/public/cpp/system/macros.h"
 
 namespace mojo {
@@ -35,7 +34,7 @@ FORWARD_DECLARE_TEST(RemoteChannelEndpointIdGeneratorTest, WrapAround);
 // table, such an ID is a "remotely-allocated local ID". From the standpoint of
 // the |Channel| allocating such a remote ID (for its peer |Channel|), it's a
 // "locally-allocated remote ID".
-class MOJO_SYSTEM_IMPL_EXPORT ChannelEndpointId {
+class ChannelEndpointId {
  public:
   ChannelEndpointId() : value_(0) {}
   ChannelEndpointId(const ChannelEndpointId& other) : value_(other.value_) {}
@@ -81,9 +80,8 @@ static_assert(sizeof(ChannelEndpointId) == sizeof(uint32_t),
               "ChannelEndpointId has incorrect size");
 
 // So logging macros and |DCHECK_EQ()|, etc. work.
-MOJO_SYSTEM_IMPL_EXPORT inline std::ostream& operator<<(
-    std::ostream& out,
-    const ChannelEndpointId& channel_endpoint_id) {
+inline std::ostream& operator<<(std::ostream& out,
+                                const ChannelEndpointId& channel_endpoint_id) {
   return out << channel_endpoint_id.value();
 }
 
@@ -92,7 +90,7 @@ MOJO_SYSTEM_IMPL_EXPORT inline std::ostream& operator<<(
 // A generator for "new" local |ChannelEndpointId|s. It does not track
 // used/existing IDs; that must be done separately. (This class is not
 // thread-safe.)
-class MOJO_SYSTEM_IMPL_EXPORT LocalChannelEndpointIdGenerator {
+class LocalChannelEndpointIdGenerator {
  public:
   LocalChannelEndpointIdGenerator()
       : next_(ChannelEndpointId::GetBootstrap()) {}
@@ -113,7 +111,7 @@ class MOJO_SYSTEM_IMPL_EXPORT LocalChannelEndpointIdGenerator {
 // locally allocate remote IDs. (See the comment above |ChannelEndpointId| for
 // an explanatory note.) It does not track used/existing IDs; that must be done
 // separately. (This class is not thread-safe.)
-class MOJO_SYSTEM_IMPL_EXPORT RemoteChannelEndpointIdGenerator {
+class RemoteChannelEndpointIdGenerator {
  public:
   RemoteChannelEndpointIdGenerator() : next_(ChannelEndpointId::kRemoteFlag) {}