Run git cl format --full on the C++ files in system_wrappers/

Specifically, this CL was generated by the following shell commands:

  cd system_wrappers
  for f in $(find . -type f | grep -E '[.](h|cc)$'); do echo >> $f; done
  git cl format --full

Followed by a revert of the changes to asm_defines.h since that file
is assembly and not C++, and a manual edit to clock.cc to add some
blank lines in the #include list to prevent `git cl format` from
sorting <MMSystem.h> before "rtc_base/win32.h".

I needed to do this because otherwise `git cl format` introduces a lot
of unrelated formatting changes in other CLs that move these files
(since `git cl format` will try to re-format all lines of a moved
file).

BUG=none

Change-Id: I083e23a57ce2899add3e60bbd539f03343c7c219
Reviewed-on: https://webrtc-review.googlesource.com/21161
Reviewed-by: Henrik Andreassson <henrika@webrtc.org>
Commit-Queue: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20600}

system_wrappers/include/cpu_features_wrapper.h

@@ -18,17 +18,14 @@ extern "C" {
 #include "typedefs.h"  // NOLINT(build/include)
 
 // List of features in x86.
-typedef enum {
-  kSSE2,
-  kSSE3
-} CPUFeature;
+typedef enum { kSSE2, kSSE3 } CPUFeature;
 
 // List of features in ARM.
 enum {
-  kCPUFeatureARMv7       = (1 << 0),
-  kCPUFeatureVFPv3       = (1 << 1),
-  kCPUFeatureNEON        = (1 << 2),
-  kCPUFeatureLDREXSTREX  = (1 << 3)
+  kCPUFeatureARMv7 = (1 << 0),
+  kCPUFeatureVFPv3 = (1 << 1),
+  kCPUFeatureNEON = (1 << 2),
+  kCPUFeatureLDREXSTREX = (1 << 3)
 };
 
 typedef int (*WebRtc_CPUInfo)(CPUFeature feature);
@@ -48,4 +45,4 @@ extern uint64_t WebRtc_GetCPUFeaturesARM(void);
 }  // extern "C"
 #endif
 
-#endif // SYSTEM_WRAPPERS_INCLUDE_CPU_FEATURES_WRAPPER_H_
+#endif  // SYSTEM_WRAPPERS_INCLUDE_CPU_FEATURES_WRAPPER_H_